You will need:: Paper : Tempera Paints – make sure you have the colours shown on the Free template.: Brushes and mixing trays or dishes: Download and Free PDF printout the colour mixing template. : Apron and a cover sheet, newspapers or paper towels if needed.Let’s get started:It is so simple. You have two sheets to fill in, one for primary colour mixing and the other for the secondary colour mixing. Pour the first two colours of paint into the trays and allow the children to mix the colours themselves in the empty tray. You can pre-paint these this template for the children but it is much better if kids do themselves so see how colours mix together to create new colours.